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Summary: Ctors | Methods | Inherited Methods

# AsyncQueryHandler.WorkerHandler

`protected class AsyncQueryHandler.WorkerHandler`
`` `extends Handler` ``

java.lang.Object
↳ | android.os.Handler
| ↳ | android.content.AsyncQueryHandler.WorkerHandler

## Summary

### Public constructors
`WorkerHandler(Looper looper)`

### Public methods
`void` | `handleMessage(Message msg)` Subclasses must implement this to receive messages.

### Inherited methods
From class `android.os.Handler`
`static Handler` | `createAsync(Looper looper, Handler.Callback callback)` Create a new Handler whose posted messages and runnables are not subject to synchronization barriers such as display vsync.
`static Handler` | `createAsync(Looper looper)` Create a new Handler whose posted messages and runnables are not subject to synchronization barriers such as display vsync.
`void` | `dispatchMessage(Message msg)` Handle system messages here.
`final void` | `dump(Printer pw, String prefix)`
`final Looper` | `getLooper()`
`String` | `getMessageName(Message message)` Returns a string representing the name of the specified message.
`void` | `handleMessage(Message msg)` Subclasses must implement this to receive messages.
`final boolean` | `hasCallbacks(Runnable r)` Check if there are any pending posts of messages with callback r in the message queue.
`final boolean` | `hasMessages(int what)` Check if there are any pending posts of messages with code 'what' in the message queue.
`final boolean` | `hasMessages(int what, Object object)` Check if there are any pending posts of messages with code 'what' and whose obj is 'object' in the message queue.
`final Message` | `obtainMessage(int what, Object obj)` Same as `obtainMessage()`, except that it also sets the what and obj members of the returned Message.
`final Message` | `obtainMessage()` Returns a new `Message` from the global message pool.
`final Message` | `obtainMessage(int what, int arg1, int arg2)` Same as `obtainMessage()`, except that it also sets the what, arg1 and arg2 members of the returned Message.
`final Message` | `obtainMessage(int what, int arg1, int arg2, Object obj)` Same as `obtainMessage()`, except that it also sets the what, obj, arg1,and arg2 values on the returned Message.
`final Message` | `obtainMessage(int what)` Same as `obtainMessage()`, except that it also sets the what member of the returned Message.
`final boolean` | `post(Runnable r)` Causes the Runnable r to be added to the message queue.
`final boolean` | `postAtFrontOfQueue(Runnable r)` Posts a message to an object that implements Runnable.
`final boolean` | `postAtTime(Runnable r, long uptimeMillis)` Causes the Runnable r to be added to the message queue, to be run at a specific time given by uptimeMillis.
`final boolean` | `postAtTime(Runnable r, Object token, long uptimeMillis)` Causes the Runnable r to be added to the message queue, to be run at a specific time given by uptimeMillis.
`final boolean` | `postDelayed(Runnable r, long delayMillis)` Causes the Runnable r to be added to the message queue, to be run after the specified amount of time elapses.
`final boolean` | `postDelayed(Runnable r, Object token, long delayMillis)` Causes the Runnable r to be added to the message queue, to be run after the specified amount of time elapses.
`final void` | `removeCallbacks(Runnable r)` Remove any pending posts of Runnable r that are in the message queue.
`final void` | `removeCallbacks(Runnable r, Object token)` Remove any pending posts of Runnable r with Object token that are in the message queue.
`final void` | `removeCallbacksAndMessages(Object token)` Remove any pending posts of callbacks and sent messages whose obj is token.
`final void` | `removeMessages(int what)` Remove any pending posts of messages with code 'what' that are in the message queue.
`final void` | `removeMessages(int what, Object object)` Remove any pending posts of messages with code 'what' and whose obj is 'object' that are in the message queue.
`final boolean` | `sendEmptyMessage(int what)` Sends a Message containing only the what value.
`final boolean` | `sendEmptyMessageAtTime(int what, long uptimeMillis)` Sends a Message containing only the what value, to be delivered at a specific time.
`final boolean` | `sendEmptyMessageDelayed(int what, long delayMillis)` Sends a Message containing only the what value, to be delivered after the specified amount of time elapses.
`final boolean` | `sendMessage(Message msg)` Pushes a message onto the end of the message queue after all pending messages before the current time.
`final boolean` | `sendMessageAtFrontOfQueue(Message msg)` Enqueue a message at the front of the message queue, to be processed on the next iteration of the message loop.
`boolean` | `sendMessageAtTime(Message msg, long uptimeMillis)` Enqueue a message into the message queue after all pending messages before the absolute time (in milliseconds) uptimeMillis.
`final boolean` | `sendMessageDelayed(Message msg, long delayMillis)` Enqueue a message into the message queue after all pending messages before (current time + delayMillis).
`String` | `toString()` Returns a string representation of the object.
From class `java.lang.Object`
`Object` | `clone()` Creates and returns a copy of this object.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void` | `finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>` | `getClass()` Returns the runtime class of this `Object`.
`int` | `hashCode()` Returns a hash code value for the object.
`final void` | `notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void` | `notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String` | `toString()` Returns a string representation of the object.
`final void` | `wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void` | `wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void` | `wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

## Public constructors

### WorkerHandler

    public WorkerHandler (Looper looper)

Parameters
`looper` | `Looper`

## Public methods

### handleMessage

    public void handleMessage (Message msg)

Subclasses must implement this to receive messages.

Parameters
`msg` | `Message`: This value cannot be `null`.

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